Furthermore, inspired by Residual Block (RB) [1]} and Residual in Residual (RIR) [2]}, we propose the Spatial and Fourier Residual Block (SFRB) and the Spatial and Fourier Residual Block in Residual module (SFRIR) as the main components of the proposed CLGNet, as illustrated in Fig. REF . In SFRB, we use two SFL to learn the information and adopt skip-connection to prevent information loss. In addition, in SFRIR, we use SFRB to replace the attention residual block in RIR and set the number of SFRB to 3.
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